Jahoda (1980), a Leading Cross-Cultural Psychologist, Challenged Evidence That the Development

Jahoda (1980) , a leading cross-cultural psychologist, challenged evidence that the development of conservation was NOT universal because:

A) he had another theory he wanted to promote.
B) there was no support in the research for the conclusion that, in some cultures, people did not develop conservation.
C) he claimed society couldn't function if everyone operated on Piaget's preoperational level.
D) he had collected extensive evidence that led to other conclusions.